RealSkinShader works by: 1) User applies mat pose to get texturemap into the materials 2) User runs RealSkinShader, which takes the current material info and builds a new mat pose, and then applies that mat pose. If you then apply another mat pose from your pose library, the node setup is wiped. You could save your setup as a mat pose. Then write a python script to inject new texturemaps into it. That would be a relatively easy script to write.

Creator of PoserPhysics
Creator of OctaneRender for Poser
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